194997105 has 32 divisors (see below), whose sum is σ = 361739520. Its totient is φ = 99475200.

The previous prime is 194997097. The next prime is 194997109. The reversal of 194997105 is 501799491.

It is not a de Polignac number, because 194997105 - 2³ = 194997097 is a prime.

It is a super-3 number, since 3×194997105³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (194997109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28296 + ... + 34505.

It is an arithmetic number, because the mean of its divisors is an integer number (11304360).

Almost surely, 2^194997105 is an apocalyptic number.

194997105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194997105 is a deficient number, since it is larger than the sum of its proper divisors (166742415).

194997105 is a wasteful number, since it uses less digits than its factorization.

194997105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62838 (or 62832 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The square root of 194997105 is about 13964.1363857562. The cubic root of 194997105 is about 579.8861300436.

The spelling of 194997105 in words is "one hundred ninety-four million, nine hundred ninety-seven thousand, one hundred five".